Pop Up MessageSupport

Hey I Just Purchased HTC Explorer
Once I updated the version ie to 2.3.5 i am getting SMS PopUp Message for particular one no. ie 50 from the Cell Service provider all other messages go directly to notification. but for this particular it always asks me to cancel or save. These messages come in bulk of around 100/day. Every time i am in middle of somm app. i have to select cancel for nos. of times the message popped.

Hey I Just Purchased HTC Explorer
Once I updated the version ie to 2.3.5 i am getting SMS PopUp Message for particular one no. ie 50 from the Cell Service provider all other messages go directly to notification. but for this particular it always asks me to cancel or save. These messages come in bulk of around 100/day. Every time i am in middle of somm app. i have to select cancel for nos. of times the message popped.